Manuals for Westerbeke Diesel Engines
Westerbeke was founded in the United States in 1937 by John H. Westerbeke and from the start focused no developing diesel engines. In 1938, the company began investigating using Detroit Diesel 6-71 engines for marine use.
In 1959, Westerbeke began marinizing the British Perkins engines. In 1990 Universal Diesel was bought by Westerbeke which now markets marine diesels under both Westerbeke and Universal brand names.
Message me via Live Chat if don't find what you are looking for, or have old manuals to share to help other sailors.
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Thanks,
Dennison
3 simple steps to make your diesel system reliable and robust
STEP ONE - Get the manuals for your equipment
Owner, Workshop and Parts Manuals are important documents that should be part of every vessel's library. They contain the detailed information necessary for safe operation, maintenance and correct servicing.
The manuals on this page are provided for public information and education and can be downloaded for free. All copyrights belong to copyright holders stated in the documents.
congratulations - by downloading these free manuals you are taking an important step towards making your engine more reliable and robust.
STEP TWO - regular maintenance
Simple, regular maintenance is the easiest, quickest and cheapest way to avoid problems and accelerated engine wear. Most expensive repairs start from a lack of basic maintenance or ignoring small warnings. The work is not difficult - it just needs to be done.
The purpose is so that we can enjoy our boat for all the reasons we bought her. Trust yourself. Do the work regularly and be methodical.
Download free checklists here
clear drawings making understanding easy
300+ drawings
Seeing is Understanding
Marine Diesel Basics 1
Maintain, Winterize and Recommission
• explains all parts of the marine diesel system - fuel,
lubrication, breathing, electrics, stern gland, propeller etc.
• 140+ tasks, 300+ drawings, 222 pages
• tasks are fully explained with clear drawings and minimal text
• all tools & supplies needed are illustrated for each task
• paperback US$17.99 £10.99 €12.99
• ebook (kindle, kobo, ibooks, google, epub) US$9.99
STEP THREE - keep a Maintenance Logbook
Keep a detailed and accurate record:
- all the work done on your diesel system - what, when & by who
- inventory of serial numbers, component descriptions
- early warning of potential problems
- time and details of any changes in performance
Use a notebook or use your iPad, tablet or desktop and record the information in an editable PDF directly as you work.
click to enlarge
Maintenance eLogbook
If you've every struggled to keep a logbook, this editable eLogbook may be exactly the help you need.
- "fillable form" PDF
- clickable checklists
- write, edit details of all tasks completed
- 40+ drawings to help inspections
- all common measurements with live calculators
- just $7.99 196 pages
"the Perfect Logbook" - verified purchaser
Service Bulletins
Bulletin #148
Field Troubleshooting Tachometer/Hourmeter
3 pages
publ. January 1985
< 1 MB file
Service Bulletin #49
Bleeding and Priming Fuel System
Four-107
1 pages
publ. November 1972
< 1 MB file
Bulletin #95
Domestic Hot Water Heaters
2 pages
publ. July 1980
<1 MB file
Bulletin #114
Domestic Water Heater Installation Using Westerbeke Flowcontroller
2 pages
publ. May 1982
<1 MB file
Final Specifications
The Century Series
4 pages
publ. 2002
2 MB file
Final Specifications
Century Engine 2006
2 pages
publ. 2006
1 MB file
Drawing
Change of Design of Raw Water Pump
1 page
publ. - no date given (c.2004)
<1 MB file
Service Bulletin #238
New filter being added to engine lift pump
1 page
February 2003
< 1 MB file
Service Bulletin
recognize engine serial numbers
Service Bulletin #242
1 page
publ. August 2004
< 1 MB file
Service Bulletin #(not clear)
Sea Water Pump Weep Hole (on transmission)
Engines: DS5, DS7 and W7
2 pages
publ. February 1980
< 1 MB file
Service Bulletin #125
Use correct wrench when removing oil pressure switch
1 page
publ. August 1983
< 1 MB file
Service Bulletin #136
HBW (Short Profile Sailing Gears) Transmission Shift Lever Adjustment
2 pages
publ. February 1984
<1 MB file
Bulletin
Alternator 70A
1 page
publ. March 2015
< 1 MB file
Engine Serial Number Guide
1 page
publ. May 2012
< 1 MB file
Engine Production Dates
Westerbeke propulsion & gensets
Universal propulsion
5 pages
publ. August 2005
(copyright unknown)
< 1 MB file
Installation Manual
Marine Engines/Generators
48 pages
publ. May 2004
5 MB file
Service Manual #43440
38B RD 80
W-27 W-27A
W-33 W-33A
42B FOUR
Generators:
WMD 11.060Hz WMD 12.5-60Hz 12.5 BTDA
WMD 8.3-50Hz WMD 9.4-50Hz 9.4 BTDA
11.0 BTD 12.5 BTD 8.3 BTD 9.4 BTD
publ. April 1998
110 pages
8MB file
Wiring Schematic
Westerbeke Marine Engines
1 page
publ. August 1991
< 1 MB file
Parts Supercession List
(change of parts numbers)
139 pages
publ. September 2017
< 1 MB file
Wiring Drawing
6A-1
10A-1
1 page
publ. March 1999?
< 1 MB file
Parts List
Four-91
37 pages
publ. 1971
12 MB file
Brochure
Four - 107 (4.107)
4 pages
publ. - no date given
1 MB file
Technical Manual
Four - 230
Six - 346
129 pages
publ. June 1975
11 MB file
Brochure
Model DS 5 hp
2 pages
publ. no date given
<1 MB file
Parts List
DS5
DS7
W7 and WPD3, WPD4 (generators)
68 pages
publ. December 1977
4 MB file
Guide
Westerbeke 7
6 pages
publ. August 1979
2 MB file
Technical sheet
7A One
2 pages
publ. May 2001
< 1 MB file
Operators Manual
7A-1
11A-1
61 pages
publ. April 2001
5 MB file
Parts List
7A One
36 pages
publ. - no date given
< 1 MB file
Wiring Schematic
7A One
1 page
publ. Dec 1993?
< 1 MB file
Wiring Schematic Revision A
7A One
1 page
publ. Dec 1994?
< 1 MB file
Wiring Schematic Revision B
7A One
1 page
publ. Dec 1994?
< 1 MB file
Wiring Schematic Revision C
7A One
1 page
publ. December 2000
1 MB file
Introduction Booklet
10 Two
8 pages
publ. June 1987
2 MB file
Operator's Manual
10 Two
38 pages
publ. June 1983
3 MB file
Wiring Schematic
10A-1
1 page
publ. December 1999
1 MB file
Technical Manual
10 Two
12B Two
158 pages
publ. June 1993
11 MB file
Parts List of "fast-moving parts"
10 Two
36 pages
publ. - no date given
1 MB file
Brochure
11A One
2 pages
publ. May 20012
< 1 MB file
Drawing
11A One marine diesel with HBW 40 transmission
1 page
publ. - October 2000
<1 MB file
Operator's Manual
12B Two
82 pages
publ. January 1988
2 MB file
Brochure
12C Two
2 pages
publ. March 2009
<1 MB file
Operators Manual
12C Two
12D Two
68 pages
publ. - January 2011
3 MB file
Service Manual
12C Two
12D Two
59 pages
publ. June 2012
6 MB file
Parts List
12C Two
45 pages
publ. October 1994
2 MB file
Installation Drawing
12D with PRM 120 transmission
1 page
publ. January 2015
< 1 MB file
Specifications Brochure
12D Two
2 pages
publ. - no date given
< 1 MB file
Operators Manual
W-13 W-21
W-27 W-33
29 pages
publ. - no date given
3 MB file
Operator's Manual
13A 18
21A 27A
33A
45 pages
publ. July 1986
2 MB file
Operators Manual
20B Two
30B Three
30C Three
72 pages
publ. January 2011
10 MB file
Technical Manual
20B Two
30B Three
99 pages
publ. April 1990
4 MB file
Parts List
20B Two
30B Three
71 pages
publ. October 1994
<1 MB file
Operator's Manual
30B Three
30C-Three
20B-two
72 pages
publ. 2011
10 MB file
Installation Drawing
30C Three
20C Two
12D Two
1 page
publ. February 2010
< 1 MB file
Technical Manual
Westerbeke 30
(formerly Four-91)
156 pages
publ. September 1980
16 MB file
Information Brochure
35D Three
2 pages
publ. September 2008
<1 MB file
Operator's Manual
35B Three
38B Four
42B Four
108 pages
publ. March 1988
4 MB file
Parts List
35C
35D
122 pages
publ. March 2003
4 MB file
Technical Drawing
35E Three with PRM 120 transmission
1 page
publ. February 2010
< 1 MB file
Operators Manual
35C Three
35D Three
35E Three
44A Four
44B Four
44C Four
62 pages
publ. April 2015
6 MB file
Technical Manual
35C Three
35D Three
35E Three
44A Four
44B Four
44C Four
109 pages
publ. April 2010
4 MB file
Specifications
38B Four
2 pages
publ. 1988
5 MB file
Brochure
40 formerly FOUR-107
4 pages
publ. 1986
1 MB file
Brochure
40
4 pages
publ. April 1978
1 MB file
Technical Manual
40
286 pages
publ. July 1980
6MB file
Operator's Manual
40 A
116 pages
publ., 1st ed. February 1988
8MB file
Brochure
40A
2 pages
publ. - no date given
< 1 MB file
Parts List
40
111 pages
publ., 7th ed. April986
6 MB file
Specifications
42B
2 pages
publ. 1992
1 MB file
Service Manual
44A Four
35C Three
104 pages
publ. March 2001
5 MB file
Parts List
44A
44B
102 pages
publ. October 2002
3 MB file
Specifications
44B Four
2 pages
publ. March 2009
1 MB file
Illustration Drawing
44B Four
1 page
publ. June 2002
1 MB file
Parts List
44A
44B
44C
1 page
publ. February 2010
1 MB file
Operator's Manual
46
48 pages
publ. May 1986 (2nd ed.)
2 MB file
Technical Manual
50 Series
119 pages
publ. 2nd ed. January 1981
8MB file
Operator's Manual
W52, W58, W70, W100
21 pages
publ. 1983
1 MB file
Operators Manual
55A Four
44 pages
publ. February 1997
4 MB file
Service Manual
55A Four
89 pages
publ. September 1998
7 MB file
Specifications
55A Four
2 pages
publ. 2000
1 MB file
Parts List
55A Four
60 pages
publ. August 1999
3 MB file
Operator's Manual
55B-Four
55C-Four
55D-Four
60 pages
publ. Revision 5 January 2014
7 MB file
Operator's Manual
55B-Four
55C-Four
59 pages
publ. 3rd. Ed. September 2008
9 MB file
Service Manual
55B Four
55C Four
86 pages
publ. September 2006
5 MB file
Parts List
55B Four
55C Four
1 page
publ. October 2002
1 MB file
Parts List
55B Four
55C Four
55D Four
46 pages
publ. November 2017
4 MB file
Specifications
55B Four
2 pages
publ. 2002
1 MB file
Installation Drawing
55B Four
1 page
publ. January 2002
1 MB file
Drawing
55B Four Engine Installation
1 page
publ. July 2010
2 MB file
Specifications
55C Four
2 pages
publ. 2009
1 MB file
Illustration Drawing
55C Four
1 page
publ. April 2005
1 MB file
Specifications
55D Four
2 pages
publ. July 2010
< 1 MB file
Installation Drawing
55D Four
1 page
publ. June 2010
< 1 MB file
Installation Drawing
55D
1 page
publ. July 2010
1 MB file
Specifications
W58
2 pages
publ. - no date given
1 MB file
Parts List
W58
78 pages
publ. December 2018
6 MB file
Brochure
60
10 pages
publ. - no date given
3 MB file
Operators Manual
63B and 63C Four
71B and 71C Four
82B Four
108B and 108C Six
58 pages
publ. March 2001
5 MB file
Parts List
63B Four
63C Four
96 pages
publ. August 1998
2 MB file
Specifications
63B Four
4 pages
publ. 1990
8 MB file
Specifications
63C Four
2 pages
publ. 1976
1 MB file
Operators Manual
63D Four
58 pages
publ. March 2001
5 MB file
Specifications
63D Four
2 pages
publ. 2002
1 MB file
Installation Drawing
ZF 63A
publ. August 2000
<1MB file
Operators Manual
64A Four
62 pages
publ. December 2003
6 MB file
Parts List Drawing
64A Four
1 page
publ. June 2005
1 MB file
Specifications
64A Four
62 pages
publ. August 2005
5 MB file
Operator's Manual
65A-Four
65B-Four
64 pages
publ. October 2014
7 MB file
Service Manual
65A-Four
115 pages
publ. July 2014
10 MB file
Parts List
65A-Four
57 pages
publ. September 2019
10 MB file
Specifications
65A-Four
2 pages
publ. July 2010
1 MB file
Installation Drawing
65A / 65B Four
1 page
publ. May 2008
1 MB file
Parts List
65A / 65B Four
1 page
publ. October 2008
1 MB file
Operators Manual
65A / 65B Four
64 pages
publ. October 2014
7 MB file
Specifications
65B Four
2 pages
publ. no date given
1 MB file
Service Manual
65B Four
116 pages
publ. June 2014
11 MB file
Parts List
70-100
106 pages
publ. 1984
6 MB file
Parts List
70-100
181 pages
publ. 1984
11 MB file
Service Manual
71B-Four / 71C-Four
First Edition
80 pages
publ. February 1998
10 MB file
Service Manual
71B-Four / 71C-Four
Second Edition
80 pages
publ. March 2010
10 MB file
Parts List
71B-Four
67 pages
publ. 1993
4 MB file
Specifications
71B-Four
4 pages
publ. no date given
8 MB file
Specifications
71C Four
2 pages
publ. no date given
<1 MB file
Parts List
71C Four
75 pages
publ. November 1996
4 MB file
Installation Drawing
71C Four
1 page
publ. April 1995
<1 MB file
Parts List
80N4
170T6
1 page
publ. April 2000
1 MB file
Parts List
80, 120
59 pages
publ. 1977
3 MB file
Parts List
80 N4
1 page
publ. no date given
<1 MB file
Service Manual
80N4 and 110T4
120N6 and 170T6
138 pages
publ. 2002
11 MB file
Operators Manual
80N4 / 110T4
120N6 / 170T6
120T4A / 170T6A
61 pages
publ. 2016
9 MB file
Service Manual
82B Specifications
4 pages
publ. 1991
1 MB file
Parts List
82B Four
67 pages
publ. May 1994
4 MB file
Service Manual
82B Four
90 pages
publ. November 1998
8 MB file
Specifications
90A Four
2 pages
publ. no date given
<1 MB file
Installation Drawing
90A Four
1 page
publ. February 1998
<1 MB file
Operators Manual
90A Four
62 pages
publ. 2018
10 MB file
Service Manual
90A Four
136 pages
publ. 2018
5 MB file
Parts List
90A Four
94 pages
publ. 2001
6 MB file
Specifications
99 Four
4 pages
publ. - no date given
11 MB file
Specifications
108B Six
2 pages
publ. no date given
5 MB file
Specifications
108C Six
2 pages
publ. July 2001
1 MB file
Parts List
108B Six
108C Six
82 pages
publ. August 1995
4 MB file
Parts List Drawing
110-T4
2 pages
publ. no date given
4 MB file
Parts List Drawing
110-T4
120-T4A
1 page
publ. June 2003
1 MB file
Parts List Drawing
120 N6
2 pages
publ. July 2003
1 MB file
Parts List Drawing
170 T6
170 T6A
1 page
publ. July 2003
1 MB file
Adjustment/Calibration
and Component Troubleshooting Guide
6 pages
publ. revised 3rd ed. Sept. 2008
1 MB file
Technical Manual
DS-5 DS-7 W7
Generators:
WPD3 WPD4
112 pages
publ. June 1978
language: English
8 MB file
Technical Manual
L25
98 pages
publ. July 2010
5 MB file
Specifications
L25
4 pages
publ. no date given
1 MB file
Owner's Manual
M2-12 M3-20
M4-30 M-2SXP
M-12 M-15
M-18 M-20
M-25
M-35 M-30
M-40 M-50
74 pages
publ. - no date given
10 MB file
Service Manual
M-20 + M-30
5416 + 5424
29 pages
publ. - 1990
2 MB file
Specifications
Pilot-50
2 pages
publ. - 1964
<1 MB file
Specifications
RD60
RD80
4 pages
publ. - no date given
<1 MB file
Specifications
Vire 7 h.p.
2 pages
publ. - no date given
<1 MB file
Operator's Manual
W-13, W-21,
W-27, W-33
29 pages
publ. - no date given
3 MB file
Specifications
W40 A
2 pages
publ. - no date given
1 MB file
Specifications
W40 A
2 pages
publ. - no date given
1 MB file
Service Manual
W-46
114 pages
publ. - 2017
14 MB file
Specifications
W46
2 pages
publ. no date given
1 MB file
Specifications
W50
4 pages
publ. 1979
1 MB file
Parts List
W50
47 pages
publ. June 1978
2 MB file
Operator's Manual
W52 W58
W70 W100
27 pages
publ. June 1983
<1 MB file
Parts List
W52
78 pages
publ. 2018
6 MB file
Service Manual
W-52/63B and 63C-Four
119 pages
publ. - 1999
15 MB file
Technical Manual
W58
164 pages
publ. November 1990
11 MB file
Parts List
W58
78 pages
publ. 2018
6 MB file
Technical Manual
W60
116 pages
publ. September 1979
11 MB file
Specifications
W60
10 pages
publ. 1979
3 MB file
Parts List
W60
62 pages
publ. April 1978
3 MB file
Parts List
W70
106 pages
publ. February 1984
6 MB file
Specifications
W70
4 pages
publ. July 1984
1 MB file
Service Manual
W70, 100
181 pages
publ. July 1983
11 MB file
Specifications
W80
8 pages
publ. 1982
3 MB file
Parts List
80, 120
59 pages
publ. June 1997
3 MB file
Parts List
80, 120
59 pages
publ. June 1997
3 MB file
Specifications
W100
4 pages
publ. - no date given
1 MB file
Specifications
W107 Four
4 pages
publ. - no date given
1 MB file
Specifications
W120
8 pages
publ. - no date given
1 MB file
Installation Drawing
ZF 45A
1 page
publ. September 2006
1 MB file
Service Manual
2&3-Cylinder Models
142 pages
publ. 1999
13 MB file
Service Manual
Engine 14088
modifications on Perkins 4.99, 4.107 and 4.108
208 pages
publ. February 1967
5 MB file
Wiring Diagrams
Wiring Diagram
33685 Rev B
1 page
publ. no date given
<1 MB file
Wiring Diagram
36467 Rev B
1 page
publ. no date given
<1 MB file
Wiring Diagram
39144 Rev J
1 page
publ. no date given
<1 MB file
Wiring Diagram
39144 Rev K
1 page
publ. no date given
<1 MB file
Wiring Diagram
39144 Rev L
1 page
publ. no date given
<1 MB file
Wiring Diagram
39144 Rev M
1 page
publ. no date given
<1 MB file
Wiring Diagram
39144 Rev N
1 page
publ. no date given
<1 MB file
Wiring Diagram
Propulsion Engine
1 page
publ. no date given
<1 MB file
Wiring Diagram
44781 Rev A
1 page
publ. no date given
<1 MB file
Installation Manual
Marine Engines & Generatots
47 page
publ. 2020
7 MB file